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ASTM B817 Type I vs. EN 1.4401 Stainless Steel

ASTM B817 type I belongs to the titanium alloys classification, while EN 1.4401 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ASTM B817 type I and the bottom bar is EN 1.4401 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
200
Elongation at Break, % 4.0 to 13
14 to 40
Fatigue Strength, MPa 360 to 520
200 to 320
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
78
Tensile Strength: Ultimate (UTS), MPa 770 to 960
600 to 900
Tensile Strength: Yield (Proof), MPa 700 to 860
230 to 570

Thermal Properties

Latent Heat of Fusion, J/g 410
290
Maximum Temperature: Mechanical, °C 340
950
Melting Completion (Liquidus), °C 1600
1440
Melting Onset (Solidus), °C 1550
1400
Specific Heat Capacity, J/kg-K 560
470
Thermal Conductivity, W/m-K 7.1
15
Thermal Expansion, µm/m-K 9.6
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 36
19
Density, g/cm3 4.4
7.9
Embodied Carbon, kg CO2/kg material 38
3.8
Embodied Energy, MJ/kg 610
52
Embodied Water, L/kg 200
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 30 to 120
110 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 2310 to 3540
130 to 800
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 48 to 60
21 to 32
Strength to Weight: Bending, points 42 to 49
20 to 26
Thermal Diffusivity, mm2/s 2.9
4.0
Thermal Shock Resistance, points 54 to 68
13 to 20

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.1
0 to 0.070
Chlorine (Cl), % 0 to 0.2
0
Chromium (Cr), % 0
16.5 to 18.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
62.8 to 71.5
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 0
10 to 13
Nitrogen (N), % 0 to 0.040
0 to 0.1
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.1
0 to 1.0
Sodium (Na), % 0 to 0.2
0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 87 to 91
0
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0

Comparable Variants